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lana [24]
3 years ago
6

Factor the following expression. x4 + x2 – 20

Mathematics
2 answers:
Zina [86]3 years ago
8 0

Answer:

2(2x+x-10)

Step-by-step explanation:

The common factor of this expression is 2 so when you factor out a 2 you have to divide everything in the expression by 2.

Crazy boy [7]3 years ago
6 0

Answer: (−2)(+2)(/2+5)

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Answer:
21 shots left
Step-by-step explanation:
70% of 30 is how you get your answer
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John C. Calhoun was an abolitionist and argued against State's Rights.
sammy [17]

Answer:

False

Step-by-step explanation:

John C. Calhoun advocated states' rights as a means of preserving slavery in the South

3 0
3 years ago
Samir needs 3/8 yard of a string for a project. He has a stick that is 1/8 long. How many 1/8 yard lengths does he need to measu
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1/8 adry

Step-by-step explanation:

5 0
3 years ago
The table below represents how Marco feels about chocolate candy bars.
kvasek [131]

Answer:

The satisfaction level gained when a customer consumes a product is total utility.It calculated by finding the total sum of utility from consumption.

Marginal utility is the rate of change of total utility and quantity consumed.

Here you apply the expression, Marginal utility=change in total utility/change in quantity consumed

Let, Marginal utility=MU

Total utility=TU

Quantity consumed=QC

Then MU=ΔTU ÷Δ QC

Given the table

Chocolate Candy Bars          Total Utility(utils)          Marginal Utility(utils)

0                                                      0                                 -

1                                                        25                             <u> x</u>

2                                                        <u> y   </u>                           17

3                                                      54                               <u>  z</u>

4                                                     <u> a    </u>                            <u>  b</u>

5                                                      66                                4

6                                                    <u>  c    </u>                               -1

Here you have assigned the missing areas with letter, hence finding the real values of the letters;

Apply MU=ΔTU÷ΔQC

1.17=\frac{y-25}{1}\\\\17=y-25\\\\y=17+25=42\\\\\\2.x=\frac{25-0}{1} \\\\x=25-0=25\\\\\\3.z=\frac{54-42}{1} \\\\z=54-42=12\\\\\\4.\frac{66-a}{1} =4\\\\66-a=4\\\\66-4=a\\a=62\\\\5.b=\frac{62-54}{1} =8\\\\\\6.\frac{c-66}{1} =-1\\\\\\c-66=-1\\\\c=-1+66=65

<u>Answers</u>

y=42,x=25,z=12,a=62,b=8,c=65

Replace the letters with the real numbers in filling the table.

8 0
3 years ago
20 units Humulin R insulin in 100 mL of normal saline (NS) to infuse for 20 hours. (Round to the nearest tenth if applicable) a.
wariber [46]

Answer:

a) 1 unit per hour will be infused.

b) 5mL per hour will be infused.

Step-by-step explanation:

Each question can be solved as a rule of three with direct measures, that means we have a cross multiplication.

a. How many units per hour will be infused?

20 units are going to be infused in 20 hours. How many units are going to be infused each hour?

1 hour - x units

20 hours - 20 units

20x = 20

x = \frac{20}{20}

x = 1

1 unit per hour will be infused.

b. How many milliliters per hour will be infused?

100mL are going to be infused in 20 hours. How many mL are going to be infused each hour?

1 hour - x mL

20 hours - 100 mL

20x = 100

x = \frac{100}{20}

x = 5

5mL per hour will be infused.

4 0
3 years ago
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